Glass-molding machine.



. J. MILLER.

GLASS MOLDING MACHINE.

APPLIOATION FILED 313.17,

Patented Nov. 30, 1909.

WILLIAM ATTORNEYS W. J. MILLER.

GLASS HOLDING MACHINE.

APPLIOATIVON FILED 23.17. -1909 Patented Nov.30, 1909.

2 SHEETS-SHEET 2.

W5/woe WILLIAM J MILLER A TTO/RNE V8 PATENT OFFICE.

WILLIAM J. MILLER, oF COFFEYVILLE, KANSA GLASS-HOLDING MACHINE.

specification of Lettersrateni. l. Patented Nov.' 30, 190:1`

Application filed February 17, 1909. Serial N o. 478,407'.

To all whom "it may concern:

Be it ltnown that I, VVrLLL-xsi J. MILLER. a citizen ofthe United States, anda resident of Cotlieyville, in the county of Montgomery and State of Kansas, have invented certain new and useful Improvements in- Glass- Molding Machines, of which the following is a specification.

o My invention is an improvementl in glass molding machines and consists in certain novel constructions and combinations of parts hereinafter described and claimed.

The object of the invention is to provide a mechanism for regulating the moment when-the forming plunger shall be withdrawn from the mold, in machinesof the type shown in Patent No. 787,050, of April 11, 1905.

Referring to the drawings forming a part hereof, Figure 1 is a side view of a portion ofva molding machine provided with the improvement., the novel features being shown in full lines; Fig. 2 is a. longitudinal section of the improvement; F ig. 3 is a section on the line 3-3 of Fig. 2; Fig. l is a front View of' the scale indicator. v

-The pr-esent embodiment of the invention is shown applied to a machine consisting of l an intermittently rotating table 2, provided with a plurality lof molds- 3, into each of which a charge of molten glass 1s inserted at a point m the movement of the table, and

'at the next position of th table a forming plunger is moved into the mold to roughly form the article, which 1s completely formed atthe next station by the blowing mechanism.

The present embodiment of 'the invention comprises a' cylinder 116, in which 1s movable a piston 117, the cylinder being provided with heads 118, through the upper-of which passes the stem 119, of the piston, andthe outer end thereof is connected with a cross head 120, having on one end thereof a cam 121, the other end being traversed by a rod 122, which is secured in place by nuts upper end of, the cylinder, and a, storage tank 129 fora suitable fluid is connected by a pipe 130 withthe cup 127 before mentioned. The function of the pipe 128 is to make the upper end of the cylinder act as an auxiliary storage tank, and by usingthe said pipe'` the storage tank .may be dispensed with, the fluid in such case passing from the top to the bottom of the cylinder instead of from the storage tank to the cylinder. A scale 131 is secured to the upper end of the cylinder, and a pointer 132 coperateswith the vscalefthe pointer being secured as at 133 to the stem 134 of a valve 135,*which controls a passage 136 leading directly from the lower end of the cylinder to the cup. By adjusting'the pointer on thescale, the valve maybe set to open any desired distance whereby to permit a greater or lesser flow of fluid.

' '1l/'hen the plunger ascends, the bracket 125 engages the lower end of the rod 122,

movingthe same upward and with it the .v .piston 117, as also the cam '121.

Liquid flows from the storage tank into the cup, past the check valve and through the passao'e 136 into the lower end of the cylinder. Wllien the forming plunger again' descends, the liquid must be forced out through the passage 136, which is more or less closed by the movement of the pointer. The piston 117 is of suoli weight, that its descent wil.v force out the liquid, unless the passage is entirely closed in which case the piston would be blocked. Vhen, however, the valve is opened, even to the smallest extent, the liquid is gradually forced out. The -lever 137 which admits Huid to the lower end of the cylinder 138 that operates the forming plunger, is engaged by the cam 121 as the piston 117 is reaching the lower end of the cylinder and is moved by such cam Vwhereby to operate the forming plunger.

It will be evident thatl by moving the pointer more or less to close the passage 136, the commencing of the rising movement of the plunger may be nicely calculated-and adjusted. The crosshead 120 maybe provided with an inclined calm as shown in Fig. 2, or may be of any other suitableshape or construction. The cylinder 116 is.con nected with thel cylinder which operates the 'forming plunger by 'means of a suitable plate 140. f.

In operation `when a mold reaches the charging position, a gatherer places a charge mold, a. forming plunger for cooperating with the mold, fluid operated means for moving the former into and out of the mold, a valve for controlling said means, and a means for varying the duration or' the stay of the plunger in the mold, said means comprising a cylinder, a piston therein, a reservoir for fluid communicating with the lower end of vthe cylinder, a check valve. inthe communication, means whereby the upward movement of the plunger will lift .the piston and permit the fluid to enter the cylinder, an outlet for the fluid, means for re stricting the outlet, means outside' of the cylinder for indicating the extent of the restriction, and means in connection with the piston for operating the valve when the piston is in its lowest position.

2. In a machine of 'the class described, a

mold, a forming plunger for cooperating with the mold, fluid operated means for moving the former into and out of the' mold, a valve for controlling said means, and a means for varying the duration of the stay of the plunger in the mold, said' means comprising a cylinder, a piston therein, a reservoir for fluid communicating with the lower end of the cylinder, a check valve in the communication, means whereby the upward movement of the plunger will lift the piston and permit the fluid to enter therein, an outletfor the fluid, means for restricting the outlet, and means in connection with the piston for operating the valve when the piston is in its lowest position.

3. In a machine of the class described, a mold, a forming plunger for cope'ating therewith, fluid operated means for moving the plunger into and out of the mold, a valve for operating said means, and means for varying the duration of the stay of the plunger in the mold, comprising a cylinder, a piston therein, meansconnected with `the piston for engagement by the plunger' on its upward movement to move the piston therewith, said plunger being freely movable by gravity in a downward direction, means for restricting the movement of the plunger in a downward direction and means whereby the piston will operate the valve at the conclusion of its movement in the downward direction.

el. In a machine of the class described, a

mold, a forming plunger for coperating therewith, fluid operated means for moving the plunger into andb out of. the mold, a valve for operating said means, and means for varying the duration of the stay of the plunger in the mold, said means comprising a piston, normally freely movable in a downward direction, a fluid 'checl'for restraining said downward movement, means for adjusting the check whereby to vary the speed of the piston, means in connection with the piston for engagement by the plunger to move-said piston in an upward direction and means ip connection with the piston tor operating the. valve when in its lowermost position.

5. In a machine of the class described, a

vmold, a forming plunger for cooperating therewith, fluid operated means for moving the plunger into and out of the mold, a valve for operating said means, and means for varying-the duration of the stay of lthe plunger in the mold, said means comprising a piston normally freely movable in a downward direction, a tluid check for restraining said downward movement, means in connection with the piston for engagement by the plunger to move said piston in an upward direction, and means in connection with the piston for operating the valve when in its lowermost position.

WILLIAM J. MILLER.

Witnesses Gro. J. MAGLY', PETER J. MAGIA. 

